how do i know which OS I am running

  • Asked about:  Mac OS X 10.6 Snow Leopard

1 Answer from the Community

  • Answer

    Go to the Apple Menu and select "About This Mac"

    You will see a version and release number just below "Mac OS X".

    Some OS code names for each version number:

    OS Version 10.4 = Tiger
    OS Version 10.5 = Leopard
    OS Version 10.6 = Snow Leopard
    OS Version 10.7 = Lion

    The third number after the version number, is the update release number within the OS Version.